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1) What is the molecular geometry of the ammonium ion?
2) What is the molecular geometry of the SO2Cl2 molecule?
3) What is the approximate F-S-F bond angle in sulfur hexafluoride?
4) What is the hybridization of the central atom in COCl2?
5) What is the hybridization of the central atom in selenium tetrabromide?
6) How many electrons are in * orbitals in the molecule O2?
7) What is the bond order in H2+?
8) The density of a sample of gas is 1.31g/L at STP (1.00atm and 273.15K). What is the average molar mass of the molecules in the gas sample? Record your answers to three significant figures.
9) The concentration of CO2 in the atmosphere is 375ppm (by volume). What is the mole fraction of CO2 in the atmosphere?
10) Calculate the ratio of rates of effusion of O2 versus Cl2. Record your answers to three significant figures.
The feed to reactor contains only C 2 H 4 and HBr. if the molar flow rate = 165mol/s, compute the fractional conversion of the limiting reactant?
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Determine what %by weight of sodium carbonate does it contain if the specific gravity of the silver nitrate solution = 1.25?
Using a liquid sample of Na that has a molar heat of fusion of 2.06 kj/mol calculate the number of moles in a liquid sample of Na if sample releases 41.4 kj when it freezes?
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
Determine which girl has the solutions at the concentrations desired and Girl A dilutes 10 mL stock solution to a final volume of 20 mL. Girl B dilutes 10 mL stock solution to a final volume of 40 mL.
Determine what is the coordination of the cations in the case of a normal spinel and what point defects are possible in the spinel structure?
Determine the numbers of oxygen molecules are required for each molecule of C 6 H 12 O 6 glucose that is oxidized if Glucose is oxidized by molecular O 2 to CO 2 and H 2 O?
Calculate the mass percent of methanol, ethanol, and MTBE, that must be present in gasoline to yield a mixture of 1.8% oxygen by weight.
Determine the partial pressure and total pressure of the gases and Find the partial pressure of carbon dioxide in a gas mixture
Calculate the partial pressure of carbon dioxide after cooling back down to the initial temperature and the mass percent, the mole fraction, and .
When you heat baking soda (NaHCO3), it breaks down into sodium carbonate powder (Na2CO3), carbon dioxide and water vapor. Write a correct thermo chemical equation and explain what it tells you about the reaction ( The enthalpy of this reaction is ..
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